<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img
          src="../assets/heima.png"
          alt=""
        >
        <span>电商后台管理系统</span>
      </div>
      <el-button
        type="info"
        @click="logout"
      >退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!-- 左侧菜单 -->
        <div class="toggleCollapse" @click="toggleCollapse">|||</div>
        <el-menu
          :default-active="activePath"
          class="el-menu-vertical-demo"
          background-color="#333744"
          text-color="#fff"
          active-text-color="#ffd04b"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
        >
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="icons[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <el-menu-item :index="'/' + submenu.path" v-for="submenu in item.children" :key="submenu.id" @click="saveActivePath('/' + submenu.path)">
              <template slot="title">
                <i class="el-icon-location"></i>
                <span>{{ submenu.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menuList: {},
      icons: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('active')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error('获取菜单失败')
      this.menuList = res.data
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    saveActivePath(activePath) {
      window.sessionStorage.setItem('active', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0;
  color: #fff;
  > div {
    display: flex;
    align-items: center;
    span {
      font-size: 20px;
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .toggleCollapse{
    background-color: #ddd;
    line-height: 24px;
    color: #fff;
    letter-spacing: 0.2em;
    text-align: center;
    cursor: pointer;
  }
  .el-menu{
    border-right: none;
  }
}
.el-main {
  background-color: #edeaf1;
}
.iconfont{
  margin-right: 10px;
}
</style>
